不同植酸酶添加水平对肉仔鸡生长性能和血清生化指标的影响  

Effects of different phytase supplementation level on growth performance and serum biochemical parameters in broilers

作　　者：王玮[1] 王志跃[1] 杨海明[1] 曹玉娟[1] 朱晓春[1] 祁国平 侯帮红 

机构地区：[1]扬州大学动物科学与技术学院 [2]涟水圣农养殖有限公司

出　　处：《中国饲料》2012年第23期16-18,21,共4页China Feed

基　　金：江苏省科技支撑计划(BE2011408);江苏省农业三项工程项目[SXGC(2012)293]

摘　　要：试验旨在研究玉米-豆粕型日粮中添加不同水平植酸酶对肉仔鸡生长性能和血清生化指标的影响。选用1日龄罗斯308雏鸡360只,随机分为4组,每组3个重复,每个重复30只鸡,且公母各半,对照组饲喂基础日粮,试验组在对照组日粮的基础上分别添加0.01%、0.02%和0.03%的植酸酶。结果显示,饲料中添加植酸酶能增加肉仔鸡的平均日增重和平均体重,提高血清磷含量,降低血清钙浓度,但对日采食量、料重比和血清中ALP、ALB、TP、BUN、GH的含量影响不大。日粮中植酸酶添加量为0.02%和0.03%时,效果最优,且两组结果无显著差异。由此可知,日粮中添加植酸酶能有效提高肉仔鸡的生长性能,植酸酶添加量为0.02%可满足肉仔鸡的生长需要,因此推荐植酸酶(酶活为5000 U/g)在饲料中的适宜添加量为0.02%。The experiment was conducted to study the effects of different phytase supplementation levels on growth performance and serum biochemical indices of rose 308 broilers.The treatments were fed with basal diet supplemented with 0 %,0.01% ,0.02 % and 0.03 % phytase. A total of 360 1-day-old rose 308 broilers were randomly divided into 4 groups with 3 replicates of 30 each （15 male, 15 female）.The results showed that：the body weight gain and average body weight of rose 308 broilers of 42-day-old increaed, serum phosphorus content increased and serum calcium content decreased by adding phytase to diet.While feed intake,feed conversion ratio （FCR）,alkaline phosphatase （ALP）,albumin（ALB）,total protein （TP）, urea nitrogen （BUN）and growth hormone （GH）had no significant effects.The results indicated that the dietary phytase supplementation could efficiently improve growth performance,and the optimum adding levels of dietary phytase （enzyme activity for 5000 U/g） was 0.02 %.

关 键 词：植酸酶 磷 肉仔鸡 生长性能 血清生化指标 

分 类 号：S816.7[农业科学—饲料科学]